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Astron. Astrophys. 357, 1105-1114 (2000) AcknowledgementsThis work was supported by INTAS-RFBR grant 95-316, RFBR grants 99-02-16045 and 00-02-16356, and by the Academy of Finland. The authors thank Dr. M.Khodachenko for the numerical analysis of the problem. ![]() ![]() ![]() ![]() © European Southern Observatory (ESO) 2000 Online publication: June 5, 2000 ![]() |